Advertisements
Advertisements
प्रश्न
A man is standing at a distance of 12 m from a cliff. Will he be able to hear a clear echo of his sound? Give a reason for your answer.
Advertisements
उत्तर
No, he is unable to hear a distinct echo because there should be a 17-meter gap between the man and the reflector.
APPEARS IN
संबंधित प्रश्न
Explain why, the flash of lightning reaches us first and the sound of thunder is heard a little later.
Name three devices which work on the reflection of sound.
What is the other name of a loud-hailer ?
Fill in the blank with suitable word :
An echo is simply a ................... sound.
On which day, a hot day or a cold day, an echo is heard sooner ? Give reason for your answer.
What is meant by 'reflection of sound' ? What type of surfaces are the best for reflecting sound ?
What is an echo ? How is echo formed ?
When sound is reflected from a distant object, an echo is produced. Let the distance between the reflecting surface and the source of sound remain the same. Do you hear an echo sound on a hotter day? Justify your answer.
______ is an image obtained by the use of reflected ultrasonic waves.
Answer the following question in your own words.
What factors are important to get a distinct echo?
